Lubricant composition and article, disk molding stamper, disk molding apparatus, disk forming method, method of forming lubrication coating
a technology of lubricant composition and article, which is applied in the direction of shaping press, baking press, optical record carrier manufacture, etc., can solve the problems that inventor cannot find lubricants that meet the foregoing characteristics, and achieve excellent concave and convex portions, improve quality and productivity of optical discs, and reduce friction occurring between mold and stamper
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first embodiment
(1) First Embodiment
(Structure of Molding Apparatus)
[0063]FIG. 1 is a sectional view showing an example of a structure of a molding apparatus 11 according to a first embodiment of the present invention. FIG. 2 is an enlarged sectional view showing the example of the structure of the molding apparatus 11 according to the first embodiment of the present invention.
[0064] As shown in FIG. 1, the molding apparatus 11 has a stationary mold member 12 and a movable mold member 13. When the stationary mold member 12 and the movable mold member 13 are fit, a cavity 14 that is a molding space is formed. In the molding apparatus 11, the cavity 14 is filled with molten disc substrate material. As a result, a disc substrate 10 is molded.
[0065] The stationary mold member 12 has a stationary mirror 21 that faces the movable mold member 13. A stamper 22 is mounted on the stationary mold member 12 so that the stamper 22 faces the cavity 14. The stamper 22 is formed in a doughnut shape having a ce...
second embodiment
(2) Second Embodiment
(Structure of Molding Apparatus)
[0096]FIG. 5 is an enlarged sectional view showing an example of a structure of a molding apparatus according to a second embodiment of the present invention. FIG. 6 is an enlarged view showing a neighborhood A of a stationary mirror 21 shown in FIG. 5. As shown in FIG. 5 and FIG. 6, a boundary lubricant film 51 is formed on a mirror surface of the stationary mirror 21. A boundary lubricant film 52 is formed on a rear surface, which is an opposite surface of a signal surface, of the stamper 22. Since the structure of the molding apparatus of the second embodiment is the same as the structure of the molding apparatus of the first embodiment except for the boundary lubricant films 51 and 52, only the boundary lubricant films 51 and 52 will be described in the following.
[0097] The boundary lubricant films 51 and 52 each contain at least one kind of phosphate esters. As phosphate esters, for example mono-phosphate ester, di-phospha...
example 1
[0133] The boundary lubricant film agent was diluted with toluene to a concentration of 5 wt %. The prepared boundary lubricant film agent was directly coated on the mirror surface of the stationary mirror 21 on which the hard film 2 was formed by waste cloth. DLC was used as the hard film 2. As the stationary mirror 21, FLMAX, which is high alloy cavity / core material produced with the concept of stainless, was used. After the boundary lubricant film agent was coated on the mirror surface, foreign matter such as dust and unevenly coated boundary lubricant film agent were wiped with acetone. In these steps, the boundary lubricant film 1 was very thinly formed with an equal thickness on the mirror surface of the stationary mirror 21.
[0134] Thereafter, the average roughness (Ra) on the center line of the mirror surface was measured by a non-contact type surface tester. The measured results denote that the average roughness (Ra) on the center line of the mirror surface before the bound...
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Abstract
Description
Claims
Application Information
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